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Finding the Fourth Proportional to 17,623.40, 26,428.70 and 8,855.40

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Solution

The fourth proportional to 17,623.40, 26,428.70 and 8,855.40 is: 13,279.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,623.40 : 26,428.70 = 8,855.40 : x
  2. Step 2: Convert to fraction form
    17,623.40/26,428.70 = 8,855.40/x
  3. Step 3: Cross multiply
    17,623.40x = 26,428.70 × 8,855.40
  4. Step 4: Simplify right side
    17,623.40x = 234,036,709.98
  5. Step 5: Solve for x
    x = 234,036,709.98/17,623.40
  6. Step 6: Final answer
    x = 13,279.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.